CVE-2021-33103 : Security Advisory and Response

A vulnerability in the BIOS authenticated code module for some Intel(R) Processors could allow a privileged user to potentially elevate privileges locally.

Understanding CVE-2021-33103

This CVE identifies a flaw in the intermediary process within the BIOS authenticated code module for specific Intel(R) Processors that could result in an escalation of privilege for a privileged user.

What is CVE-2021-33103?

The vulnerability in the BIOS authenticated code module for Intel(R) Processors enables a local privileged user to potentially elevate their privileges, leading to an escalation of privilege scenario.

The Impact of CVE-2021-33103

If exploited, this vulnerability could allow a privileged local user to gain higher access rights than intended, potentially compromising the security and integrity of the system.

Technical Details of CVE-2021-33103

This section delves into the specifics of the vulnerability, including affected systems, the exploitation mechanism, and version details.

Vulnerability Description

The flaw involves an unintended intermediary in the BIOS authenticated code module for certain Intel(R) Processors, creating an opportunity for privilege escalation for local users.

Affected Systems and Versions

The vulnerability impacts Intel(R) Processors, and affected versions can be found in the provided references.

Exploitation Mechanism

A privileged local user could exploit this vulnerability to escalate their privileges by leveraging the intermediary in the BIOS authenticated code module.

Mitigation and Prevention

Discover the immediate steps to secure your systems and recommendations for long-term security practices.

Immediate Steps to Take

Ensure to apply relevant security patches and follow the provided mitigation strategies to safeguard your systems against potential exploitation.

Long-Term Security Practices

Implementing secure coding practices, regular security audits, and staying informed about security updates are crucial for maintaining robust security posture.

Patching and Updates

Stay updated with security advisories from Intel and ensure prompt patching of affected systems to address CVE-2021-33103.